Brazil midfielder Gilberto Silva has backed Kaka to return to his best form at the World Cup after a subdued performance against North Korea on Tuesday.
Kaka only managed to start 21 of Real Madrid's Primera Liga games last season due to persistent groin and thigh injuries.
The Real star was withdrawn with 12 minutes left at Ellis Park, and Gilberto Silva is convinced Kaka will become more influential as the tournament progresses.
"In every game he will improve," Gilberto Silva said. "It is very good to see him because he is really hungry to do well for Brazil and for himself. All the team are behind him and he has got the confidence of everyone. I am sure for the next games he will be much, much better."
Kaka himself revealed he was content with his performance, given the uncertainty that surrounded his fitness before the tournament.
"As a debut, I believe it was good," he told Brazilian website Globo Esporte. "I didn't know what condition I would be in for the World Cup because of injury, so I am happy. I hope to constantly improve, but the debut has been a positive one."
Focusing on the match against North Korea, Gilberto Silva claimed that being patient is the best way to beat a team who adopt a defensive approach.
"When you face an opponent who drop behind the ball moving the ball around is the only way to try to break through their defence," he said. "What is important for us is to keep doing our jobs in the right way. It was a good start.
"Maybe some people expected us to score four or five goals, something like that, but we must accept that football has changed. If you don't do the right things in the right moment you will have a problem.''